I am interested in your technique for your rolls from the motorcycle.It's been a while since I knew how anybody else trains. The biggest benefit I ever saw from tumbling on street surfaces were during a couple severe motorcycle crashes, where I should've been killed or crippled, but came out with only a few minor bruises. There was something else I saw real clearly for the first time during those crashes that was far more important than falling on hard surfaces.
I'll explain in my next post what I saw.
I have had one my self. She ran a read light and I hit her , tying to slow down from 33-35 and got to about 25-28 MPH.
I hit the rear of the car just behind the wheel / axle and when I realized my helmet was pushing my windshield out of the way,
I said "Tuck! Tuck ! Tuck !" to myself of course.
I did not put out any limbs, I brought them in as tight as I could.
.
I had discussed wits others who have lost limbs from motorcycle accidents and learned that as one slides or impacts if something is out and unable to support the force of the impact then it breaks or gets ripped off.

.
I impacted on right shoulder, mid back, left hip , left foot and then right foot hit left shin and then moment lifted my large heavy frame up and I landed it in a stand.
Quote from person nearby waiting to turn left: "Is this a movie?"
.
Lots of muscle and tendon injuries.
I did not crack the helmet not have ant scratches on it.
I also didn't have any scuff marks on my leather vest nor the jeans. The left boot did have a small scuff on the side of the sole of the show from the impact.
.
I am curious about your experiences, from a purely personal perspective.